Gaya APA

KATHARI, F, G, C, N, F, G, K, J, L, L, C, G, I, J, C, H. (). OBSTETRI WILLIAMS EDISI 21 VOL 2 (21). : EGC JAKARTA.

Gaya MLA

KATHARI, F., GARY, CUNNINGHAM,, NORMAN, F., GANT,, KENNETH, J., LEVENO,, LARRY, C., GILSTRAP, III,, JOHN, C., HAUTH,. "OBSTETRI WILLIAMS EDISI 21 VOL 2". 21 : EGC JAKARTA, . Text.